Chimney wind protector



June 2, 1942.

4 CHIMNEY WIND PROTECTOR Filed May 1, 1941 L -ea L y 4/ v Inventor J05? P 'Hansen/ I 3 i v O By Aw 7 Alt n or ey J. P. HANSEN' 4, 34

Patented June 2, 1942 UNITED STATES PATENT OFFICE CHIMNEY WIND PROTECTOR John P. Hansen, Eyota, Minn.

Application May 1, 1941, Serial No. 391,433

I 1 Claim.

This invention relates to what may be termed a chimney wind protector, an object of the invention being to provide a device for mounting on the smokestack or chimney pipe to protect the chimney from wind draft which is objectionable since such. drafts cause the stove to smoke.

Further in accordance with the present invention the protector operates substantially automatically in response to air currents so as to be at all times properly positioned for effectively safeguarding the chimney against such wind drafts. V

The invention together with its objects and advantages will be best understood from'a study of the following description taken in connection with the accompanying drawing wherein:

Figure 1 is a side elevational view of the'device,

and illustrating the application of the same to the smokestack or chimney pipe.

Figure 2 is a top plan view. of the device.

Figure 3 is a detail sectional view taken substantially on the line 33 of Figure 2.

Figure 4 is a detail sectional view taken substantially on the line 4-4 of Figure 1.

Referring more in detail to the drawing it will be seen that the top partof a, smoke stack or chimney pipe is indicated generally by the reference numeral 5 and my improved wind or draft protector is indicated generally by the reference numeral 6.

In the'preferred embodiment thereof the protector 6 comprises an annular frame I that is adapted to be sleeved on the upper end of the" i of riveted or otherwise secured to the frame 1,

as at 9, and clearly shown in Figure 4.

A shorter substantially U-shaped strap I0 has the legs thereof bent outwardly in opposite directions to provide apertured lugs I I through the medium of which, and rivets or other fastening elements I2 the strap I0 is secured to the under side of the strap 8 as shown.

The straps 8 and Ill are provided with aligned openings to accommodate a threaded pivot bolt or shaft I3 that is held in position through the medium of a nut 14.

A shank I5, which in the present instance, is formed of two pieces of strap metal or other suitable material riveted or otherwise secured together, as at I6, is provided adjacent one end thereof with a hub portion I1 that is sleeved on the pivot bolt I3.

The shank member I5 is secured in proper position on the pivot bolt l3 through the medium of the aforementioned nut l4 and a nut [8, as 7 shown.

semi-cylindrical'shield 23 is secured, intermediate its upper and lower ends, to the shank [5.

It will be apparent that with the device mounted on the smokestack or chimney pipe 5 as shown the wind will always turn the shield 23 so that its relation to the pipe 5 will be such that any air currents having a tendency to flow downward through the pipe 5 will be resisted by upward air currents, and consequently the objectionable down-drafts will be eliminated. 7

It is thought that the construction, manner of use, and advantages of a shield or protector of this character will be apparent withoutfurther detailed description.

Also it is to be understood that while I have herein illustrated the preferred embodiment of the invention, I fully appreciate that minor changes may be made therein without departing from the spirit of the invention.

Having thus described the invention, what is claimed as new is: i

In a protector for a chimney pipe to prevent down draft, an annular frame for telescoping over the upper end of said pipe, a centrally bored strap of inverted U-shape spannin the top of said frame diametrically in elevated position and having legs secured to opposite sides of said frame, a shorter centrally bored strap of U-shape depending from the first strap and fixed thereto, a vertical rod passing through the bores of said straps and extending above the same,a horizontal shank having a central hub rotatable on the rod above the first-mentioned strap, a pair of nuts threaded onto said rod above and below said hub, respectively, and forming end thrust collars therefor, a vane on one end of said shank, and a transversely curved vertical shield on the other end of the shank extending downwardly below the upper end of said pipe.

JOHN P. HANSEN. 

